…:22:43 InnoDB: Database was not shut down normally! InnoDB: Starting crash recovery. InnoDB: Reading tablespace information from the .ibd files… InnoDB: Doing recovery: scanned up to log sequence number 3 768598528 (6 %) …. InnoDB: Doing recovery…
Post: Innodb Double Write
August 4, 2006 By 24 Comments
… which case Innodb will skip page upate operation or “former” in which case Innodb will perform update. If page is inconsistent recovery can… term log file allocated inside Innodb tablespace – it contains space for 100 pages. When Innodb flushes pages from Innodb buffer pool it does… real location and fsync() called the second time. Now on recovery Innodb checks doublewrite buffer contents and pages in their original location…
Post: How to recover deleted rows from an InnoDB Tablespace
February 20, 2012 By 4 Comments
… objetive is Percona Data Recovery Tool for InnoDB. This is the tool that we use in our data recovery service and it’s…: 1- Extract all the InnoDB pages from the tablespace: First we need to download Percona Data Recovery Tool and compile all the… following link: http://www.percona.com/docs/wiki/innodb-data-recovery-tool:mysql-data-recovery:generating_a_table_definition With the table definition…
Post: Recovering Innodb table Corruption
July 4, 2008 By 22 Comments
… with innodb_force_recovery=1 080704 0:22:53 InnoDB: Assertion failure in thread 1158060352 in file btr/btr0btr.c line 3235 InnoDB: Failing… higher innodb_force_recovery modes to block purging activity, insert buffer merge or recovery from transactional logs all together. Though the lower recovery mode…
Post: How to estimate time it takes Innodb to Recover ?
May 9, 2007 By 7 Comments
… may have recovery time of 5-10 minutes. To understand things affecting recovery time you better to understand how Innodb recovery works. When Innodb recovers from logs it finds the last checkpoint time. Innodb has…
Post: Magic Innodb Recovery self healing
May 22, 2007 By 2 Comments
… this particular corruption instance Innodb did not print table name in question), drop tables, restart Innodb without innodb_force_recovery and load them back…”. So when dealing with Innodb recovery for bad corruptions you may want to: – Start with lower innodb_force_recovery settings and see which one…
Post: MySQL Crash Recovery
July 30, 2006 By 30 Comments
… fast is better solution. Innodb Recovery – Unless you have some hardware problems (99%) or found new Innodb bug (1%) Innodb recovery should be automatic and bring your database to consistent state. Depending on innodb_flush_lot_at…
Post: Innodb Recovery - Is large buffer pool always better ?
July 17, 2007 By 3 Comments
… Innodb crash recovery on box with large amount of memory (64GB) with Innodb Buffer pool configured to be just a bit over 20GB. Innodb recovery was taking long hours with reasonably sized Innodb log files… into this problem during Innodb recovery and I guess this is when the problem is most visible as Innodb is not doing anything…
Post: Recovery after DROP & CREATE
August 22, 2012 By 1 Comment
… TABLE the recovery would be trivial. Index_id of the PRIMARY index of table sakila/actor still resides in InnoDB dictionary although… the following “CREATE TABLE” make the recovery any harder? When a table gets dropped InnoDB deletes respective records from the dictionary – tables… is index_id. In revision 69 of Percona Data Recovery Tool for InnoDB two tools are added: s_tables and s_indexes…
Post: Innodb Undelete and Sphinx Support
November 12, 2007 By 4 Comments
… Recovery for MySQL. We’re mainly focused on Innodb with this one because it has distinct page structure which allows good data recovery… not to announce it to the public. Recovering Innodb is not the only recovery task we had to do over last year… a task to write more details about Innodb data recovery process and release code for our innodb recovery toolset, so you can recover your…
